--- title: "Customise" id: "8869" type: "page" slug: "customise" published_at: "2026-05-05T11:32:31+00:00" modified_at: "2026-05-14T10:49:29+00:00" url: "https://bighead.co.uk/bespoke/customise/" markdown_url: "https://bighead.co.uk/bespoke/customise.md" --- [javascript:void(0)](javascript:void(0)) [javascript:void(0)](javascript:void(0)) - [Home](https://bighead.co.uk/) - [Products](https://bighead.co.uk/bighead-products/) - [Bespoke](https://bighead.co.uk/bespoke/) - [Guidance](https://bighead.co.uk/guidance/) - [tecHub](https://bighead.co.uk/the-techub/) - [About bigHead](https://bighead.co.uk/about-bighead/) - [Contact](https://bighead.co.uk/get-in-touch/) [Home](https://bighead.co.uk/) › [Bespoke](https://bighead.co.uk/bespoke/) › Customise # Customise Choose from a range of features that unlock new possibilities for your project. ## We can customise bigHead products to meet your needs. - # Alternative finishes and coatings ## Finishes and coating options to meet your performance needs. #### When to use alternative finishes and coatings Useful for a range of purposes. Choose coatings for corrosion resistance, surface cleanliness, friction control, or visual appearance. **Compatible bigHead products:** - Most bigHead products. See guide for details and limitations. [View free guide](https://bighead.co.uk/the-techub/guides/alternative-finishes-and-coatings/) [Get in touch](#contact-form) - # Anti-loosening/lock nuts ## Integrated locking and rotation-resistance features. #### When to use anti-loosening/lock nuts Use to safeguard against fastening relaxation or to prevent components loosening under vibration. **Compatible bigHead products:** - Internally threaded nut (product type: F1/SF1) [View free guide](https://bighead.co.uk/the-techub/guides/anti-loosening-lock-nuts/) [Get in touch](#contact-form) - # Closed blind collar ## An internally threaded fixing that pairs a blind Head with a blind flange collar. #### When to use closed blind collar Use when you need an airtight seal between the collar and the Head. The blind flange prevents ingress of liquid resin or molten polymer into the threaded section. **Compatible bigHead products:** - Internally threaded collar (product type: F2/SF2) [View free guide](https://bighead.co.uk/the-techub/guides/closed-blind-collar/) [Get in touch](#contact-form) - # Closed sighted collar ## An internally threaded fixing that pairs a sighted Head with a blind shank collar. #### When to use closed sighted collar Use when you need to prevent fluid or moisture ingress in to the threaded section. The closed end seals off the threaded section, with thread access through the sighted Head. **Compatible bigHead products:** - Internally threaded collar (product type: F2/SF2) [View free guide](https://bighead.co.uk/the-techub/guides/closed-sighted-collar/) [Get in touch](#contact-form) - # ISO 4753 end-forms ## Modifies the end of a stud to align with a range of standardised forms. #### When to use ISO 4753 end-forms Use to help reduce cross-threading, prevent nut loss, and enable self-alignment during manual or automated assembly. **Compatible bigHead products:** - Externally threaded stud (product type: M1/SM1) [View free guide](https://bighead.co.uk/the-techub/guides/iso-4753-end-forms/) [Get in touch](#contact-form) - # Large round Head ## 50 mm diameter, cropped circular Heads. Available blind (B50) or sighted (S50). #### When to use large round Head Use to reduce stresses and help prevent material failure in thin or lower-stiffness substrates. Large round Heads have ~2× the load-spreading area of standard Head designs. They also provide wider reinforcement of thin panels at the fastening point, which limits localised bending or buckling under applied loads. **Compatible bigHead products:** - Internally threaded nut (product type: F1/SF1) - Externally threaded stud (product type: M1/SM1) - Internally threaded collar (product type: F2/SF2) - Unthreaded pin (product type: M4) - Nail (product type: SM5) [View free guide](https://bighead.co.uk/the-techub/guides/large-round-head/) [Get in touch](#contact-form) - # Large square Head ## 58 x 58 mm square Heads. Available blind (B58) or sighted (S58). #### When to use large square Head Use when you need to maximise load spread or localised reinforcement. Large square Heads have ~3.5 × the load‑spreading area of standard Head designs. **Compatible bigHead products:** - Internally threaded nut (product type: F1/SF1) - Externally threaded stud (product type: M1/SM1) - Internally threaded collar (product type: F2/SF2) - Unthreaded pin (product type: M4) - Nail (product type: SM5) [View free guide](https://bighead.co.uk/the-techub/guides/large-square-head/) [Get in touch](#contact-form) - # Reverse weld collar ## An internally threaded fixing with a flipped weld orientation. #### When to use reverse weld collar Use when installation loads may exceed the weld strength of standard products, or when you need a smooth surface for component seating or moulding shut-off. **Compatible bigHead products:** - Internally threaded collar (product type: F2/SF2) [View free guide](https://bighead.co.uk/the-techub/guides/reverse-weld-collar/) [Get in touch](#contact-form) - # Thread length variants ## Thread lengths can be customised in 1 mm increments. #### When to use thread length variants Use when standard thread lengths won’t fit your application. Shorter variants reduce intrusion into surrounding spaces. Longer ones span greater distances or increase thread engagement. **Compatible bigHead products:** - Externally threaded stud (product type: M1/SM1) - Internally threaded collar (product type: F2/SF2) [View free guide](https://bighead.co.uk/the-techub/guides/thread-length-variants/) [Get in touch](#contact-form) # Need something new? ## Let’s create your ideal fastening solution together. [Explore](https://bighead.co.uk/bespoke/create/) - [Overview](https://bighead.co.uk/bespoke/) - [Customise](https://bighead.co.uk/bespoke/customise/) - [Create](https://bighead.co.uk/bespoke/create/) This site uses cookies to improve your experience. [Read More](https://bighead.co.uk/privacy-policy/) Accept Privacy & Cookies Policy Close #### Privacy Overview This website uses cookies to improve your experience while you navigate through the website. 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